Two issues...
When replying to a comment, it still states the Max file size is 512mb no matter what I change it to. I have changed it to 3mb in both the Advanced Attachemnts settings as well as the post & editor settings in wpForo and cleaned out all caches.
Second issue, while the file limits function, if I try to upload a file that is over the set limit, is says 'Working' for about 60 seconds then does nothing. There should be an error that pops up stating the file limit was exceeded.